gcleaner | 2f333edff0517d55306406bf5ec51ceeb22b9cc0663b725095f5fd37d95842d1

Analysis

max time kernel
142s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2023, 02:42

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 1.9MB
Sample230119-c61s8aab2s
SHA256 2f333edff0517d55306406bf5ec51ceeb22b9cc0663b725095f5fd37d95842d1
MD5 c000ca1eb698e1a5e92cbe274cdebe93
SHA1 6883a78265c1fa4bc8e6adf58b2fcb8c2ef56e32
SHA512 233562406791cf347c90356df1897f3e9233c0203e12ea39190f6a37b464d8fecb64a7689a89b5c26143ffacde23ec9ae96207be04bc25d3cd05dd4ce5b72f6f
SSDEEP 24576:k3lK8LSZ78vP8ix77eRaHGMCQz0F4dy8uUQz243GTvmeFTIxpr0gzUqFaxDTFzVk:k1JLSZ68k7IEV0kOCRvmeMprNIVZXGH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56
45.12.253.72
45.12.253.98
45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Executes dropped EXE 3 IoCs

pid	Process
1568	file.tmp
1576	finalrecovery.exe
4820	vZb3O.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
1568	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\data\is-9KK10.tmp	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\is-2N5GO.tmp	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\is-BS2IO.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FetsoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\is-2J7RU.tmp	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\is-GM1BT.tmp	file.tmp
File created	C:\Program Files (x86)\FetsoftFR\FinalRecovery\is-53L50.tmp	file.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3768	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1576	finalrecovery.exe
1576	finalrecovery.exe
1576	finalrecovery.exe
1576	finalrecovery.exe
1576	finalrecovery.exe
1576	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3768	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 1568	4756	file.exe	80
PID 4756 wrote to memory of 1568	4756	file.exe	80
PID 4756 wrote to memory of 1568	4756	file.exe	80
PID 1568 wrote to memory of 1576	1568	file.tmp	81
PID 1568 wrote to memory of 1576	1568	file.tmp	81
PID 1568 wrote to memory of 1576	1568	file.tmp	81
PID 1576 wrote to memory of 4820	1576	finalrecovery.exe	82
PID 1576 wrote to memory of 4820	1576	finalrecovery.exe	82
PID 1576 wrote to memory of 4820	1576	finalrecovery.exe	82
PID 1576 wrote to memory of 1512	1576	finalrecovery.exe	90
PID 1576 wrote to memory of 1512	1576	finalrecovery.exe	90
PID 1576 wrote to memory of 1512	1576	finalrecovery.exe	90
PID 1512 wrote to memory of 3768	1512	cmd.exe	92
PID 1512 wrote to memory of 3768	1512	cmd.exe	92
PID 1512 wrote to memory of 3768	1512	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\is-20QNQ.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-20QNQ.tmp\file.tmp" /SL5="$8005E,1722756,211456,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1568
- - C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1576
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\vZb3O.exe
      4⤵
      Executes dropped EXE
      PID:4820
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1512
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

finalrecovery.exe

Path C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe
Size 1.8MB
SHA256 b363f3c0fdfad2634820525d0614be75b21fa9944a6b327c59dcd1e3d2be2261
MD5 3213bad36ba865b9781f89b23b04a5a2
SHA1 44d42e608ce9e19ccf2461dca18e592172e96054
SHA512 736bd8f382b214241535a42c2175b7fe8b21341cb48780bf478885663f4c1156d799e42cc8fd3df2991a449cbb1b371a9e0b7908d8d120576483da35aa02251d
SSDEEP 24576:3wz0fGDjNy5v5ss3/3Lq338d8kJt6EK2tb6+oBQfU/g1hyAh1wlxGZqmoZQ9P8kH:gzlY5BKmTfB1hdGQkNc
MD5 SHA1 SHA512 SSDEEP

Submit Download

finalrecovery.exe

Path C:\Program Files (x86)\FetsoftFR\FinalRecovery\finalrecovery.exe
Size 1.8MB
SHA256 b363f3c0fdfad2634820525d0614be75b21fa9944a6b327c59dcd1e3d2be2261
MD5 3213bad36ba865b9781f89b23b04a5a2
SHA1 44d42e608ce9e19ccf2461dca18e592172e96054
SHA512 736bd8f382b214241535a42c2175b7fe8b21341cb48780bf478885663f4c1156d799e42cc8fd3df2991a449cbb1b371a9e0b7908d8d120576483da35aa02251d
SSDEEP 24576:3wz0fGDjNy5v5ss3/3Lq338d8kJt6EK2tb6+oBQfU/g1hyAh1wlxGZqmoZQ9P8kH:gzlY5BKmTfB1hdGQkNc
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-20QNQ.tmp\file.tmp
Size 849KB
SHA256 9914c9be261849a293479b801cf4049396731004420607503bc64ade3d680da4
MD5 f54afdf7bc5b13282407c3ce5a5e79fb
SHA1 c7387741f1d6662e83ca4b91fe999af7a72bde40
SHA512 76e37137070d1fdd5cc3b3a2055d611c00b2456fe64e20ba5365195507c98c1db1af2473fc291da7ec2b9499084e8013fb5047b56aeb14ffa5ac948c7d8dc03a
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc751XEx9R/:8kdrP837TzH7A6nV7FMcdWT
MD5 SHA1 SHA512 SSDEEP

Submit Download

file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-20QNQ.tmp\file.tmp
Size 849KB
SHA256 9914c9be261849a293479b801cf4049396731004420607503bc64ade3d680da4
MD5 f54afdf7bc5b13282407c3ce5a5e79fb
SHA1 c7387741f1d6662e83ca4b91fe999af7a72bde40
SHA512 76e37137070d1fdd5cc3b3a2055d611c00b2456fe64e20ba5365195507c98c1db1af2473fc291da7ec2b9499084e8013fb5047b56aeb14ffa5ac948c7d8dc03a
SSDEEP 24576:8tCUA4arPEn37TzH7A6nw9yzeESUFWHc751XEx9R/:8kdrP837TzH7A6nV7FMcdWT
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-OQVDJ.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

vZb3O.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\vZb3O.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

vZb3O.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\vZb3O.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1576-150-0x0000000000400000-0x00000000013CB000-memory.dmp

Download

memory/1576-143-0x0000000000400000-0x00000000013CB000-memory.dmp

Download

memory/1576-142-0x0000000000400000-0x00000000013CB000-memory.dmp

Download

memory/1576-147-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1576-153-0x0000000000400000-0x00000000013CB000-memory.dmp

Download

memory/4756-132-0x0000000000400000-0x000000000043B000-memory.dmp

Download

memory/4756-138-0x0000000000400000-0x000000000043B000-memory.dmp

Download

memory/4756-154-0x0000000000400000-0x000000000043B000-memory.dmp

Download